TACHINIDAE OF ORIENTAL REGION 31 



- $ postabdomen terminating in a pair of very short blunt claspers that are not at all 



hook-like. [Specimen seen from Malaya] . . . . . ? Undescribed sp. 



[Running here is a $ specimen in BMNH collection that is exactly like bicincta 

 except in the form of the apical part of the postabdomen, including clasper-shape 

 (which is similar to L. aenescens, Text-fig. 132). The different form appears to 

 be natural and the specimen probably represents an undescribed species very 

 near bicincta.] 



16 Tibiae entirely blackish or darkened basally. Femora black or brownish black for 



their whole extent. Pollinosity of abdomen bluish grey or silvery (except yellow 



in pulchra and some allied specimens) . . . . . . . . 17 



- Tibiae uniformly orange-red. Femora orange-red apically (inconspicuously so on 



fore femora, for about the apical quarter or third on mid and hind femora). 

 Abdomen with two complete bands of very thick bright golden pollinosity (on 

 T3 and T4) that sharply contrasts with shining black remainder of abdomen. 

 [Specimen seen from Assam]. . .. . Undescribed sp. (or ? pulchra variant) 



17 Fore tibia with two pv setae. Occiput with the upper lateral parts extensively 



covered with stiff black hair. Basal scutellar setae very strong, nearly as large 

 as the apical setae. Tibiae completely black. Calyptrae with the thickened 

 rims pale brown to dark brown (contrasting with the generally glassy appearance). 

 Wings dark brown on the distal two-thirds and anterobasally, hyaline postero- 

 basally, the contrast between dark and clear areas very sharp. [Large species, 

 length 15-16 mm, with the pollinose bands of T3 and T4 appearing inconspicuously 

 dark bluish grey to naked eye] .... obscura Brauer & Bergenstamm 



- Fore tibia with one pv seta. Occiput with the upper lateral parts usually extensively 



bare, sometimes with some soft yellow hair, if a few black hairs present then 

 usually close to the foramen. Basal scutellar setae much weaker than the apical 

 setae, sometimes completely absent. Tibiae blackish at the base and usually 

 reddish yellow (except for a narrow dark brown mid-dorsal line) on the distal 

 two-thirds, sometimes the paler parts dark reddish brown and then not much 

 contrasting with the blackish bases. Calyptrae with the thickened rims creamy 

 white to yellow. Wings variously infumate or sometimes yellow and brown, but 

 without such sharply contrasting dark brown and hyaline areas . . . 18 



18 Abdomen with two complete boldly conspicuous bands of pale yellow to golden 



pollinosity. Wings extensively pale yellowish. [<J postabdomen as Text-fig. 127] 



pulchra Townsend 



- Abdomen with two complete or incomplete bands of silvery, ashy or bluish grey 



pollinosity that are not boldly visible to naked eye (if the pollinosity with a trace 

 of yellowish colour then one or both of the pollinose bands interrupted and 

 incomplete medially). Wings varied . . . . . . . . 19 



19 Wings conspicuously bicolorous, yellow with bright orange veins anterobasally and 



dark smoky brown apically (the hind border weakly smoky). Epistome more 

 strongly warped forwards than usual and easily visible in front of the vibrissal 

 insertions when the head seen in profile. Abdomen appearing almost uniformly 

 shining black to naked eye (because the pollinose band of T3 feebly developed and 

 that of T4 widely discontinuous on the tergite dorsum). Calyptrae yellow. 

 Facial pollinosity golden. Large species, length about 15 mm. [Java, Sabah, 

 Sumatra] ........... Undescribed sp. 



- Wings not so, usually faintly to strongly browned, if somewhat yellowish antero- 

 basally (imbuta) the colour does not outstandingly contrast with the brownish 

 colour. Epistome not or slightly warped forwards and hardly at all visible in 

 front of the vibrissal insertions when the head seen in profile. Abdomen not 

 appearing uniformly black, continuous greyish pollinose bands evident to naked 

 eye on T3 and T4 even if narrow and almost evanescent medially. Calyptrae 



